Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d17d1f75dd18381…

MALICIOUS

PDF

49.2 KB Created: 2020-11-03 10:54:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 115581526f663286cfd5ee88ec825596 SHA-1: 218f94c8178d86ec8b5b38e86af7d0090f9f1b1c SHA-256: 1d17d1f75dd183818d02d61d579a23f45f966f686fc65469d0a28973d16d2650
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gettraff.ru/strik?keyword=the+animator+s+survival+guide+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f936ae83643c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384819/normal_5f9f424e18bd2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_5f86f613c16b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393506/normal_5f9005dc10ca7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379043/normal_5f8b62e4e7464.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2224a2d0-5dbe-44b8-b3c6-b14178fe5283/tifezedirinokanago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee3add26-d38e-4bec-861e-ff7317f28fac/jupubuwaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/7496/7470/files/92331272924.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4a4dc04-3776-4906-b35c-2860ffc1d8f5/the_swap_full_movie_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8406/9526/files/stop_kiss_monologue.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5f4c4e2-01f8-4625-be05-bccadbafebc2/24866886299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/7910/2378/files/traditional_theories_of_intelligence.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c65604d9-6778-4980-afb2-084e3b26b5b1/kefuwozubataku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/sample_letter_of_reprimand_for_insubordination.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7501 5348 bytes
SHA-256: afcb1e901affd454860680b05d20b455aed3decbd12bf0fc812514e05c2bf2d9
font_01_sfnt_off00008705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8705 10192 bytes
SHA-256: 1be0a4b95fec054d02508b0841c10147b3907c3994cd82c2c22302eb4b05c88d
font_02_sfnt_off0000a9ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9EA 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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